<script setup >
import { defineProps, onUnmounted, ref, watch } from 'vue'
const props = defineProps({
  swiper: {
    type: Array,
    default: () => []
  },
  autoplay: {
    type: Boolean,
    default: false
  },
  time: {
    type: Number,
    default: 2000
  }
})
const curId = ref(0)
let timer = null
const carouselFn = () => {
  timer = setInterval(() => {
    curId.value++
    if (curId.value >= props.swiper.length) {
      curId.value = 0
    }
  }, props.time)
}

watch(() => props.swiper, (newVal, oldVal) => {
  if (newVal.length > 0) {
    if (props.autoplay === true) {
      carouselFn()
    }
  }
}, { immediate: true })

const leave = () => {
  carouselFn()
}

const enter = () => {
  clearInterval(timer)
}
onUnmounted(() => {
  clearInterval(timer)
})

const toggle = (step) => {
  curId.value += step
  if (curId.value >= props.swiper.length) {
    curId.value = 0
  }
  if (curId.value < 0) {
    curId.value = props.swiper.length - 1
  }
}
</script>

<template>
  <div class="xtx-carousel">
    <ul class="carousel-body" @mouseleave="leave" @mouseenter="enter">
      <li class="carousel-item " v-for="(item,index) in swiper" :key="item.id" :class="{fade:curId===index}">
        <RouterLink :to="`/goods/${item.id}`" v-if="item.id">
          <img
            :src="item.imgUrl"
            alt=""
          />
        </RouterLink>

        <div v-else class="slider" >
          <RouterLink :to="`/goods/${goods.id}`"  v-for="goods in item" :key="goods.id">
          <img
            :src="goods.picture"
            alt=""
          />
          <p class="name ellipsis">{{ goods.name }}</p>
          <p class="price">&yen;{{ goods.price }}</p>
        </RouterLink>
        </div>
      </li>

    </ul>
    <a href="javascript:;" class="carousel-btn prev" @click="toggle(-1)"
      ><i class="iconfont icon-angle-left"></i
    ></a>
    <a href="javascript:;" class="carousel-btn next" @click="toggle(1)"
      ><i class="iconfont icon-angle-right"></i
    ></a>
    <div class="carousel-indicator">
      <span :class="{active:curId===i}" v-for="(obj,i) in 5" :key="i" @click="curId=i"></span>

    </div>
  </div>
</template>

<style scoped lang="less">
.xtx-carousel {
  width: 100%;
  height: 100%;
  min-width: 300px;
  min-height: 150px;
  position: relative;
  .carousel {
    &-body {
      width: 100%;
      height: 100%;
    }
    &-item {
      width: 100%;
      height: 100%;
      position: absolute;
      left: 0;
      top: 0;
      opacity: 0;
      transition: opacity 0.5s linear;
      &.fade {
        opacity: 1;
        z-index: 1;
      }
      img {
        width: 100%;
        height: 100%;
      }
    }
    &-indicator {
      position: absolute;
      left: 0;
      bottom: 20px;
      z-index: 2;
      width: 100%;
      text-align: center;
      span {
        display: inline-block;
        width: 12px;
        height: 12px;
        background: rgba(0, 0, 0, 0.2);
        border-radius: 50%;
        cursor: pointer;
        ~ span {
          margin-left: 12px;
        }
        &.active {
          background: #fff;
        }
      }
    }
    &-btn {
      width: 44px;
      height: 44px;
      background: rgba(0, 0, 0, 0.2);
      color: #fff;
      border-radius: 50%;
      position: absolute;
      top: 228px;
      z-index: 2;
      text-align: center;
      line-height: 44px;
      opacity: 0;
      transition: all 0.5s;
      &.prev {
        left: 20px;
      }
      &.next {
        right: 20px;
      }
    }
  }
  &:hover {
    .carousel-btn {
      opacity: 1;
    }
  }
}
// .carousel-indicator{
//     margin-left: 50px;
// }
.slider{
  display: flex;
  justify-content: space-around;
  padding: 0 40px;
  >a{
    width: 240px;
    text-align: center;
    img{
      padding: 20px;
      width: 230px !important;
      height: 230px !important;
    }
    .name{
      font-size: 16px;
      color: #666;
      padding: 0 40px;
    }
    .price{
      font-size: 16px;
      color: @priceColor;
      margin-top: 15px;

    }
  }

}
</style>
